Federal authorities called former Buffalo Sabres scoring standout Thomas Vanek to Rochester on Monday as a witness in an investigation, but neither party would divulge the subject matter.

Vanek was in the Federal Building on State Street on Monday afternoon.

His agent, Steve Bartlett of Pittsford-based Sports Consulting Group, later issued a statement from Vanek that said, in part: "Representatives of the U.S. Federal Government have asked for my cooperation in an investigation. I am not the subject of any investigation or prosecution."

Barbara Burns, public affairs officer for the U.S. Attorney's Office of the Western District of New York, declined to comment.

Bartlett was emphatic that the government investigation does not involve any wrongdoing by Vanek, who scored 42 goals for the American Hockey League's Rochester Americans during his first pro season of 2004-05.

"He is not going to be charged," Bartlett said. "He won't be charged with a crime because he hasn't done anything wrong."

Aside from the statement, Vanek did not comment, and Bartlett said that "if you're a witness in a federal proceeding, you are told not to talk about it."

The native of Austria has played nine NHL seasons. He was with the Sabres from 2005-06 until October 2013, when he was traded to the New York Islanders. He then was dealt to the Montreal Canadiens at the trade deadline in March.

On July 1, Vanek, 30, accepted a three-year contract with a total value of $19.5 million from the Minnesota Wild. Minnesota has been his home for several years.

Bartlett said that Monday's proceedings should not prompt any repercussions from the NHL.

"It's their right to ask," Bartlett said, "but I'm confident that nothing happened that Thomas is in trouble for with the league."